华西口腔医学杂志 ›› 2012, Vol. 30 ›› Issue (6): 603-606.doi: 10.3969/j.issn.1000-1182.2012.06.010

• 临床研究 • 上一篇    下一篇

锥形束CT用于评价离体牙槽骨高度准确性的研究

方冬1 江寰2 林志勇2   

  1. 1.山东大学附属省立医院口腔颌面影像科； 2.口腔内科， 济南250021
  • 收稿日期:2012-05-28 修回日期:2012-09-18 出版日期:2012-12-01 发布日期:2012-12-01
  • 通讯作者: 林志勇，Tel：15805310068
  • 作者简介:方冬（1974—），男，山东人，主管技师，硕士

Evaluation of the accuracy of alveolar bone height measurement in vitro by cone beam computed tomography

Fang Dong1, Jiang Huan2, Lin Zhiyong2   

  1. 1. Dept. of Oral Maxillofacial Radiology, Provincial Hospital Affiliated to Shandong University, Jinan 250021, China; 2. Dept. of Oral Medicine, Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
  • Received:2012-05-28 Revised:2012-09-18 Online:2012-12-01 Published:2012-12-01

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摘要：

目的评价锥形束CT（CBCT）图像测量离体牙槽骨高度的准确性和可重复性，为其应用于牙周病的临床诊断和预后评价提供理论依据。方法使用CBCT对8具干燥下颌骨进行扫描，在图像上重复测量236个人工选择标志点处牙槽嵴顶至釉牙骨质界的距离；同时使用游标卡尺直接测量以上标志点处牙槽嵴顶至釉牙骨质界的距离。应用SPSS 13.0软件对所得数据进行统计学分析。结果CBCT图像对牙槽嵴顶至釉牙骨质界距离的重复测量结果间差异无统计学意义（P>0.05）；CBCT图像与游标卡尺对牙槽嵴顶至釉牙骨质界距离的测量结果间差异也无统计学意义（P>0.05）。结论CBCT图像可清晰显示牙与牙槽骨之间的空间解剖关系，其对牙槽骨高度体外测量的结果具有准确性和可重复性。

关键词: 锥形束CT, 牙槽嵴顶, 釉牙骨质界, 放射摄影术

Abstract:

Objective To evaluate the accuracy and repeatability of alveolar bone height measurement in vitro by cone beam computed tomography（CBCT）, and to provide theoretical application of CBCT in periodontal clinic. Methods Eight dry mandibles with 236 selected markers were scanned by CBCT scanner, and the distance from alveolar ridge crest to cemento-enamel junction were measured on every marker by the images of CBCT. Meanwhile the distances on the dry mandibles were measured directly by vernier caliper. All the data were analyzed by SPSS 13.0 statistics software. Results There was no significant difference between the two repeated measurements by the CBCT images （P>0.05）, and no significant difference were found between the measurement by the CBCT images and by vernier caliperas well（P>0.05）. Conclusion The CBCT images could demonstrate the three-dimensional relationships between tooth and alveolar bone accurately. As far as the height of alveolar bone measurement was concerned, CBCT show good accuracy and repeatability in vitro.

Key words: cone beam computed tomography, alveolar ridge crest, cemento-enamel junction, radiography

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